Interactions between mineral phases in the preservation of soil organic matter

Wiseman, Clare L.S.; Püttmann, Wilhelm

doi:10.1016/j.geoderma.2005.09.001

Cited by 150 publications

(98 citation statements)

References 32 publications

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“…In the case of Cambisols, the highest contents of WSA ma could be due to the bond between SOM and mineral elements. Of course this effect can be stronger when oxides, hydroxides, sesquioxides of iron and aluminium occur in the soils (Goldberg et al 1988;Amézketa 1999;Bronick & Lal 2005;Wiseman & Püttmann 2006). Overall, the highest contents of WSA ma were determined in grassed strips in-between the vineyard rows ( Table 2).…”

Section: Resultsmentioning

confidence: 97%

Stability of soil aggregates and their ability of carbon sequestration

Šimanský¹,

Bajčan²

2014

Soil & Water Res.

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AbstractŠimanský V., Bajčan D. (2014): Stability of soil aggregates and their ability of carbon sequestration. Soil & Water Res., 9: 111-118.One of the most important binding agents for forming stable aggregates is a soil organic matter (SOM), which can be retained in various size fractions of aggregates. If aggregates are water-resistant, they retain more carbon. Therefore, the aim of this study was to evaluate the stability of aggregates and their ability of carbon sequestration in different soil types and soil management systems in Slovakian vineyards. The highest content of water-stable macro-aggregates (WSA ma ) was determined in Cambisols, and the lowest in Fluvisols. The highest content of WSA ma (size fraction 0.5-3 mm) was determined in Chernozems, decreasing within the following sequence: Fluvisols > Leptosols > Cambisols > Luvisols. The soil type had a statistically significant influence on the re-distribution of soil organic matter in size fractions of water-stable aggregates. The highest content of SOM in water-stable aggregates of the vineyards was determined in grassy strips in-between the vineyard rows in comparison to intensively cultivated rows of vineyard. The highest values of carbon sequestration capacity (CSC) in WSA ma were found in Cambisols > Leptosols and the lowest values of CSC were in Fluvisols. The microaggregates represented a significant carbon reservoir for the intensively cultivated soils (rows of vineyard). On the other hand, increasing of macro-aggregates (size fraction 0.5-3 mm) was characteristic for grassland soils (between the rows of vineyard).

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Section: Resultsmentioning

confidence: 97%

Stability of soil aggregates and their ability of carbon sequestration

Šimanský¹,

Bajčan²

2014

Soil & Water Res.

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“…In addition, none of the minerals had the significant relationship with Clay/OC ratio. Illite and chlorite minerals had the highest correlation with OC according to Wiseman and Püttmann (2006). They expressed that illite and chlorite by causing high amphoteric properties in the broken edges tend to absorb the OC.…”

Section: Mixed Layermentioning

confidence: 97%

Carbon stock and mineral factors controlling soil organic carbon in a climatic gradient, Golestan province

Zeraatpishe

Khormali

2012

J. Soil Sci. Plant Nutr.

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Organic matter content of the many soils is less than 5% by weight; nevertheless this small amount of organic matter (OM) has a significant impact on soil properties. A study to evaluate the role of climate in distribution of organic carbon (OC) and mineral factors (such as soil composition, soil stability and clay minerals) controlling OC was performed. Seven surface soils were collected (0-20 cm depth) with three replications in a climate gradient (200 to 800 mm of rainfall). The results showed that aggregates < 0.053 mm in most of the soils had the lowest organic matter content (Figure 2), and carbon stock increased with increasing in the aggregates size in most soils. There was no significant relationship between OC content and clay mineral content, but there was significant relationship for illite and chlorite. It can therefore be deduced that OC stock is probably controlled mainly by climate factor than clay minerals. Oxalate iron was positively related to OC content, but this relationship does not apply for dithionite iron. The relationship between soil OC content and specific surface area (SSA, g m -2 ) of the soil was positive and significantly correlated. Labile soil OC content had a positive relationship with the climate index (P/ET°). As the index increased the potential loss of OC content increased, as well. Labile OC content was estimated between 0.49 to 16.64 g kg -1 and a potential loss of OC was between 1.28 to 46.12 Mg of carbon per hectare on the soil surface horizon.

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“…Recent theoretical models hold that hydrophilic groups, which are abundant in oxidizing environments, interact directly with the mineral surface; this occurs mainly with Fe and Al oxides, due to their high density of monocoordinated hydroxyls (Krull et al, 2003;Schöning et al, 2005;Wiseman and Püttmann, 2006;Mikutta et al, 2011). Some studies have indicated that in aerobic soils, the surface of Fe oxides can interact directly with carbohydrate-like structures that are more labile compounds, and not only via ligand exchange with carboxyl groups (Miltner and Zech, 1998;Schöning et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Aggregate Stability in Soil with Humic and Histic Horizons in a Toposequence under Araucaria Forest

Hanke

Dick

2017

Rev. Bras. Ciênc. Solo

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Aggregate stability is one of the most important factors in soil conservation and maintenance of soil environmental functions. The objective of this study was to investigate the aggregate stability mechanisms related to chemical composition of organic matter in soil profiles with humic and histic horizons in a toposequence under Araucaria moist forest in southern Brazil. The soils sampled were classified as Humic Hapludox (highest position), Fluvaquentic Humaquepts (lowest slope position), and Typic Haplosaprists (floodplain). The C and N contents were determined in bulk soil samples. The chemical composition of soil organic matter was evaluated by infrared spectroscopy. Aggregate stability was determined by applying increasing levels of ultrasound energy. Carbon content increased from the top of the slope to the alluvial plain. Higher ultrasonic energy values for clay dispersion were observed in the C-rich soils in the lower landscape positions, indicating that organic compounds play an important role in the structural stabilization of these profiles. Both aliphatic and carbohydrate-like structures were pertinent to aggregate stability. In the Oxisol, organo-mineral interaction between carbohydrates and the clay mineral surface was the most important mechanism affecting aggregation. In soils with a higher C content (Humaquepts and Haplosaprists), stabilization is predominantly conferred by the aliphatic groups, which is probably due to the structural protection offered by these hydrophobic organic groups.

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Interactions between mineral phases in the preservation of soil organic matter

Cited by 150 publications

References 32 publications

Stability of soil aggregates and their ability of carbon sequestration

Stability of soil aggregates and their ability of carbon sequestration

Carbon stock and mineral factors controlling soil organic carbon in a climatic gradient, Golestan province

Aggregate Stability in Soil with Humic and Histic Horizons in a Toposequence under Araucaria Forest

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